Dissociatives is short for dissociative anaesthetics. The dissociatives are one of the major classes of psychedelic drugs. Therapeutically, they act as anaesthetics by essentially disconnecting the brain for the body and sensation. At subtherapeutic doses, these drugs are psychedelics, and often powerfully so. The 3 dissociatives that are currently used recreationally are DXM (dextromethorphan), ketamine, and PCP.